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From Moh's: https://sci-hub.st/downloads/2020-07-29/83/rezk2020.pdf#page=13&zoom=100,0,133
To investigate whether different auditory motion directions elicited systemic eye movement patterns, we tested 7 participants in an
eye tracking experiment outside the fMRI scanner. We used an Eyelink 1000 eye tracker (SR Research, Mississauga, Canada) to record the gaze location. The eye tracker had a sampling rate of 1000 Hz, and gaze tracking range of 32 angle horizontally and 25
angle vertically. The eye tracker was calibrated using a built-in 9-point protocol. The participants performed 8 runs of the same experiment that was done inside the scanner for the auditory modality and performed the same task. We tested in each participant if the eye
position was different when perceiving different auditory motion directions. First, we performed a within-subject per-time point analysis where we compared the gaze location in the horizontal and vertical plane at each time point (1 ms resolution) of the auditory
motion blocks. Since the analysis was done within-subject, the variance of the gaze location for each motion direction was estimated
from the different runs. Additionally, we performed a within-subject analysis where we averaged the gaze position across time in each
run for the horizontal and the vertical plane for each motion direction (See Figure S4A and S4B for the results).